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<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./res/normalize.css">
    <style>
        body {
            background-image: url(./res/-3a8ad4927f98b53b.jpg);
            background-attachment: fixed;
            background-size: cover;
            background-repeat: no-repeat;
        }

        .outer {
            width: 500px;
            background-color: skyblue;
            border: 1px solid black;
            padding: 20px;
        }

        .box {
            width: 200px;
            height: 200px;
            font-size: 20px;
        }

        .box1 {
            background-color: #888;
        }

        .box2 {
            background-color: orange;
            position: relative;
            top: -140px;
            left: 50px;
            z-index: 3;
        }

        .box3 {
            background-color: green;
            position: relative;
            top: -280px;
            left: 100px;
        }

        .box4 {
            background-color: red;
            position: absolute;
            top: 190px;
            left: 150px
        }
    </style>
</head>

<body>
    <div class="outer">
        <div class="box box1">1</div>
        <div class="box box2">2</div>
        <div class="box box3">3</div>
        <div class="box box4">4</div>
    </div>
    <h1>nihao</h1>
    <h2>buhao</h2>
    <span>1</span>
    <span>2</span>
    <p style="background-color: rgba(255, 255, 255, 0.818);">Lorem ipsum dolor sit amet consectetur adipisicing elit.
        Ipsum accusamus eius repellendus mollitia, autem
        laudantium corporis <strong>deleniti</strong> distinctio totam sapiente blanditiis praesentium impedit enim modi
        dolores
        asperiores <em>jlkj</em> nihil in.</p>
</body>

</html>